Sharp pain im abdomen when pressure apply it ok but when let go it sore & radiates into back & left shoulder?

Where?: I'd need to know more, but that kind of tenderness can mean infection in the abdomen. If you have a fever, nausea, vomiting and chills (or any combination of same) please do go to the ER tonight. If not, please get an appointment tomorrow to be evaluated by a doctor.

Need more info: Where exactly is the pain? Do you have nausea,vomiting, diarrhea, blood or mucous in stool or blood in urine, fever, chills ........ so see doctoe asap. If worse or other symptoms go to ER.

Go to ED: Pain on letting go abdomen indicates infection and involvement of peritoneum and this should be taken seriously . So please go to ED immediately.